Boiler attachment



(No Model.)

G. F. JOHNSON. BOILER ATTACHMENT.

No. 480,264. Patented Aug. 9, 1892.."-

UNITED STATES PATENT OFFICE.

GUSTOF F. JOHNSON, OF MILAN, MINNESOTA.

BOILER ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 480,264, dated August9, 1892.

Application filed March 19, 1892.

To all whom it may concern.-

Be it known that I, GUSTOF F. JOHNSON, a citizen of the United States,residing at Milan, in the county of Chippewa and State of Minnesota,have invented a new and useful Boiler Attachment, of which the followingis a specification.

This invention relates to attachments for steam-boilers; and it has forits object to provide an improved mud-drum attachment for boilers, whichwill greatly facilitate the collecting of dirt and scales from the waterand provide for the ready and convenient removal of such accumulationeven while the engine is in operation and under the full pressure of thesteam in the boiler.

With these and many other objects in view, which will readily appear asthe nature of the invention is better understood, the same consists inthe novel construction, combination, and arrangement of partshereinafter more fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view of aportion of a steam-boiler provided with a mud-drum attachmentconstructed in accordance with the present invention. Fig. 2 is a detailperspective view of the attachment broken from the boiler.

Referring to the accompanying drawings, A represents a steam-boiler ofany ordinary type, provided in the bottom thereof, adjacent to the frontend, with a depressed trap or sink B, converging downwardly andcentrally tothe short discharge-pipe O. The said dischargepipe 0 leadsinto the inclosing mud-drum D, secured to the bottom of the boiler oversaid discharge-pipe and designed to receive and collect accumulations ofdirt and scales from the water in the boiler and providing means wherebysuch accumulations can be removed. The said mud-drum is provided in oneside thereof with a cleaning-hole E, inclosed by an ordinary closure orclamp F, which closes the hole when the drum is receiving theaccumulations of matter from the boiler and which is opened when it isdesired to clean out the drum. The said drum is further provided in oneside thereof with the dischargecock G, which drains the water and steamfrom the mud-drum when it is desired to clean the same. A screw valvestem H passes through the bottom of the drum and carries at its upperend within the drum the plugvalve 1, which is designed to work into theSerial No. 425,590. (No model.)

discharge-pipe O and close the passage therethrough'when the mud-drum isbeing cleaned, and vice versa, to be screwed out of the same when it isdesired to allow the accumulations to collect within the drum.

To clean the drum, the discharge-pipe is first closed by means of thevalve, as already noted. The mud-drum is next discharged of the waterand steam therein through the discharge-cock G, after which thecleaning-hole is opened and the accumulations of matter cleaned out,which can be done while the engine is in operation and under the fullpressure of the steam in the boiler, inasmuch as the boiler isdisconnected, as it were, from the mud-dru m by the valve. When themuddrum is cleaned, the discharge-cock and cleaning-hole are closed andthe main valve is grad ually opened and lowered from the dischargepipe,so as to allow the drum to again fill.

Having thus described my invention, what I claim, and desire tosecure'by Letters Patcut, is

1. The combination of a boiler having a depressed sink or trap in thebottom thereof and converging to a central discharge-opening, and amud-drum secured to the bottom of said boiler and over saiddischarge-opening, substantially as set forth.

2. The combination of a boiler having a depressed sink or trap in thebottom thereof and converging to a central discharge-pipe, a muddrumsecured to the bottom of said boiler over said discharge-pipe, and areciprocating valve working through the mud-drum into saiddischarge-pipe, substantially as set forth.

3. The combination of a boiler having a converging depressed sink ortrap in the bottom thereof and terminating in a short projectingdischarge-pipe, a mud-drum secured to the bottom of said boiler oversaid dischargepipe and provided with a cleaning-hole and adischarge-cock, and a reciprocating valve-stem working through thebottom of the drum and carrying a plug-valve at one end adapted to entersaid short discharge-pipe, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

GUSTOF F. JOHNSON. WVitnesses:

B. K. SALVERSON, A. GILBERTSON.

